MCAAS Regional County Offices Central OfficeHuman Services Center1430 DeKalb Pike, Box 311Norristown, PA 19404-0311(610) 278-3601 Lower MerionDistrict Office9 South Bryn Mawr Ave.Bryn Mawr, PA 19010(610) 527-7962 PottstownDistrict Office260 High St.Pottstown, PA 19464(610) 327-9203 Eastern Courthouse AnnexSuite 303, 102 York Rd.Willow Grove, PA 19090-3283(215) 784-5413 North PennDistrict Office421 West Main St.Lansdale, PA 19446(215) 361-7931 Upper PerkiomenDistrict Office452 Penn St.Pennsburg, PA 18073(215) 679-4112